I have got my iPhone 5 and i have forgot my passcode i have tried to restore and update via my windows computer and it still says sorry this iphone has a password please enter it before you sync but i dont know it ? Please help what do i do????!!

You will need to force your phone into recovery mode (Google for instructions) and restore. All the data will be wiped from the phone.

Locked Out, Forgot Lock or Restrictions Passcode, or Need to Restore Your Device

1. iOS- Forgotten passcode or device disabled after entering wrong passcode

2. iPhone, iPad, iPod touch: Wrong passcode results in red disabled screen

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4. What to Do If You've Forgotten Your iPhone's Passcode

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6. iTunes 10 for Mac- Update and restore software on iPod, iPhone, or iPad

Forgotten Restrictions Passcode Help

You will need to restore your device as New to remove a Restrictions passcode. Go through the normal process to restore your device, but when you see the options to restore as New or from a backup, be sure to choose New.

Also, see iTunes- Restoring iOS software.